The 2018 dog licensing period will run from April 1 until June 30. All renewal requests either in person, by mail or online, must be submitted by this time to avoid a late fee. The licenses will be valid from April 1, 2018, through March 31, 2019. Beginning April 1, 2018, you can also register your dog online for the current licensing period. Use Braintree's Online Dog Licensing System to license or register your dog.